Brake Rotor - Machining and Replacement Criteria

Bulletin No.: 001/96
Issued: 02/07/96
Revised:

Category
P

Applicable Model/s
All Models

Subject
BRAKE ROTOR MACHINING AND REPLACEMENT CRITERIA

APPLICABLE MODELS

All Models with Disc Brakes

DESCRIPTION

Policies for warrantable repair and replacement of brake rotors are described in this bulletin. Follow these guidelines to ensure proper repairs for brake problems.

Brake Judder:

1. Measure the thickness of the rotor.

^ If, after machining, the remaining thickness will be below the minimal allowable thickness, replace the rotor. Refer to the workshop manual for allowable thickness.

^ If the rotor thickness meets or exceeds allowable thickness, proceed to step 2.

2. Machine the rotors using an "on the-car" brake lathe.

3. Follow the detailed repair procedures located in Service Bulletin, Category P, 001/95 and the applicable workshop manual.

Other Than Brake Judder:

1. Inspect the rotor(s) for cracks.

^ If cracks are not found, refer to the table for repair/replacement criteria. Do not replace the rotor(s).

If cracks are found, replace the rotor.





ROTOR MACHINING AND REPLACEMENT CRITERIA

NOTE:
1. When rotor replacement is necessary, machine the newly installed disc with an on the car brake lathe.

2. MMA may request (within 30 days after the claim has been paid) that replaced rotors be returned for inspection and product evaluation.